Diodes Inc. – BCR420U/421U: Adjustable Current Regulators Simplify the Driving of LED Strips

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BCR420U/421U: Adjustable Current Regulators Simplify the Driving of LED Strips
The BCR420U/BCR421U monolithically integrates a transistor, diodes and resistors to function as a Constant Current Regulator (CCR) for linear LED driving. The device regulates with a preset 10mA nominal that can be adjusted with external resistor up to 350mA. It is designed for driving LEDs in strings and will reduce current at increasing temperatures to self-protect. Operating as a series linear CCR for LED string current control, it can be used in multiple applications, as long as the maximum supply voltage to the device is <40V.

FEATURES
• 10mA ±10% constant preset output current
• Up to 350mA adjustable current with an external resistor
• Negative temperature coefficient (NTC)
• Parallel devices to increase regulated current
• Up to 40V (BCR420) supply voltage
• Up to 1W power dissipation in SOT26 (SC-74)
• -55°C to +150°C operating junction temperature range
• AEC-Q101 qualified

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